/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:37,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:37,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:37,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:37,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:37,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:37,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:37,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:37,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:37,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:37,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:37,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:37,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:37,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:37,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:37,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:37,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:37,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:37,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:37,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:37,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:37,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:37,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:37,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:37,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:37,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:56:37,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:56:37,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:56:37,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:56:37,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:56:37,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:56:37,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:56:37,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:56:37,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:37,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:37,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:37,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:37,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:37,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:37,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:37,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:37,186 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:37,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:37,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:37,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:37,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:37,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:37,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:37,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:37,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:37,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:37,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:37,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:37,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:37,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:37,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:37,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:37,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:37,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:37,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:37,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:37,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:37,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:37,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:37,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:37,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:37,558 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:37,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-08-22 16:56:37,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3214ca/59feb43a926b4217b59ee109ebc45796/FLAGc456b0704 [2020-08-22 16:56:38,160 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:38,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2020-08-22 16:56:38,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3214ca/59feb43a926b4217b59ee109ebc45796/FLAGc456b0704 [2020-08-22 16:56:38,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d3214ca/59feb43a926b4217b59ee109ebc45796 [2020-08-22 16:56:38,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:38,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:38,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:38,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:38,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc4fd3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38, skipping insertion in model container [2020-08-22 16:56:38,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:38,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:38,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,756 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:38,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,797 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:38,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38 WrapperNode [2020-08-22 16:56:38,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:38,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:38,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:38,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:38,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:38,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:39,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:39,316 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:56:39,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:39 BoogieIcfgContainer [2020-08-22 16:56:39,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:39,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:39,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:39,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:39,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:38" (1/3) ... [2020-08-22 16:56:39,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bba45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:39, skipping insertion in model container [2020-08-22 16:56:39,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (2/3) ... [2020-08-22 16:56:39,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bba45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:39, skipping insertion in model container [2020-08-22 16:56:39,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:39" (3/3) ... [2020-08-22 16:56:39,330 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-08-22 16:56:39,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:39,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:39,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:39,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:39,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:39,418 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:39,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:39,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:39,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:39,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:39,419 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 16:56:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:56:39,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:39,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-08-22 16:56:39,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368456211] [2020-08-22 16:56:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:39,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368456211] [2020-08-22 16:56:39,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:39,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:39,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657053382] [2020-08-22 16:56:39,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:39,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:39,698 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-22 16:56:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:39,873 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-22 16:56:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:39,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-22 16:56:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:39,886 INFO L225 Difference]: With dead ends: 76 [2020-08-22 16:56:39,887 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 16:56:39,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 16:56:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-22 16:56:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 16:56:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-08-22 16:56:39,940 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-08-22 16:56:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:39,941 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-08-22 16:56:39,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-08-22 16:56:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:56:39,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:39,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:39,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,944 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-08-22 16:56:39,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728629657] [2020-08-22 16:56:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:40,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:40,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728629657] [2020-08-22 16:56:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:40,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:40,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512713996] [2020-08-22 16:56:40,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:40,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:40,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:40,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:40,112 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-08-22 16:56:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:40,300 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-08-22 16:56:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:40,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-22 16:56:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:40,302 INFO L225 Difference]: With dead ends: 69 [2020-08-22 16:56:40,302 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:56:40,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:56:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:56:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-22 16:56:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 16:56:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-22 16:56:40,316 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-08-22 16:56:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:40,317 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-22 16:56:40,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-22 16:56:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 16:56:40,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:40,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:40,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:40,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:40,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:40,321 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-08-22 16:56:40,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:40,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835204005] [2020-08-22 16:56:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:40,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:40,523 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:40,577 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:40,578 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:40,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:40,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:40 BoogieIcfgContainer [2020-08-22 16:56:40,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:40,647 INFO L168 Benchmark]: Toolchain (without parser) took 2150.44 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 104.2 MB in the beginning and 199.2 MB in the end (delta: -95.1 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,649 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.54 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,651 INFO L168 Benchmark]: Boogie Preprocessor took 123.46 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 181.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,652 INFO L168 Benchmark]: RCFGBuilder took 399.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 160.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,653 INFO L168 Benchmark]: TraceAbstraction took 1321.54 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 159.4 MB in the beginning and 199.2 MB in the end (delta: -39.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.54 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.46 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.0 MB in the beginning and 181.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.69 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 160.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1321.54 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 159.4 MB in the beginning and 199.2 MB in the end (delta: -39.8 MB). Peak memory consumption was 74.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, c={-1:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L32] COND TRUE i